Audi RS6 OBDII Testing
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Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-80 just a test. Final control diagnosis Note: Final control diagnosis can only be performed with the engine stopped and the ignition switched on. During final control diagnosis the individual control elements (except injectors) are actuated for approx. 1 minute or until key is pressed to select next control element. Advanced Search Search The control elements are checked acoustically or by means of touch. Version: 2.5r01sp0003 Final control diagnosis is terminated if the next step is not selected after an actuation time of approximately 1 minute, or if the engine is started or an engine speed pulse is detected. Prior to restarting the final control diagnosis, the engine must be started and the ignition switched off and on again. Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-81 The final control diagnosis function actuates the following components in the stated sequence: 1. Evaporative Emissions (EVAP) canister purge regulator valve -N80- (fuel tank breather valve) 2. Secondary air injection solenoid valve -N112- 3. Secondary air injection pump relay -J299- 4. Wastegate bypass regulator valve -N75- 5. Valve -2- for camshaft adjustment -N208- 6. Leak Detection Pump -V144- 7. Recirculating valve for turbocharger -N249- Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 8. Right Electro-Hydraulic engine mount solenoid valve -N145- (on right in direction of travel) 9. Left Electro-Hydraulic engine mount solenoid valve -N144- (on left in direction of travel) Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-82 10. Valve -1- for camshaft adjustment -N205- 11. Vacuum pump for brake system 12. Fuel pump 2 relay -J49- (refer to note Page 01-95 ) 13. Coolant fan actuation 2 14. Coolant fan actuation 1 15. Injector, cyl. 1 -N30- 16. Injector, cyl. 5 -N83- 17. Injector, cyl. 4 -N33- 18. Injector, cyl. 8 -N86- 19. Injector, cyl. 6 -N84- Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 20. Injector, cyl. 3 -N32- 21. Injector, cyl. 7 -N85- 22. Injector, cyl. 2 -N31- Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-83 Locations of control elements Page 24-5 Requirement Fuses for engine electronics OK Electrical Wiring Diagrams, Troubleshooting & Component Locations Work sequence - Connect vehicle diagnostic, testing and information system VAS 5051 and select vehicle system "01 - Engine electronics" from list. Ignition must be on. Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY Indicated on VAS 5051: - From list -1- select diagnostic function "03 - Final control diagnosis". Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-84 Actuation of EVAP canister purge regulator valve - N80- (fuel tank breather valve) Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 1 - EVAP caniste purge regulator valve - N80- - Touch key. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted This valve is actuated intermittently (clicks) for approximately 1 minute unless next control element is selected beforehand by touching key. Note: The two fuel pumps must run during the actuation period. The flow noise is clearly audible at the fuel pressure regulator. If the fuel pumps do not run, check Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY actuation Page 24-86 . If valve is not actuated (does not click): - Check EVAP caniste purge regulator valve -N80- Page 24-192 . Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-85 Actuation of Secondary air injection solenoid valve - N112- - Touch key. Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 2 - Secondary air injection solenoid valve - N112- - Touch key again. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted This valve is actuated (clicks) for approx. 1 minute if key is not touched beforehand to select next control element. If valve is not actuated (does not click): Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY - Check Secondary air injection solenoid valve - N112-: Repair Manual, 4.2 Liter V8 5V BiTurbo Engine Mechanical, Engine Code(s): BCY, Repair Group 26 Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-86 Actuation of Secondary air injection pump relay - J299- - Touch key. Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 3 - Secondary air injection pump relay - J299- - Touch key again. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY Secondary air injection pump relay -J299- (in relay carrier in plenum chamber electronics box, refer to wiring diagram) intermittently switches secondary air injection pump motor - V101- on and off for approx. 1 minute if next control element is not selected beforehand by touching key. If secondary air injection pump motor does not run intermittently: - Check Secondary air injection pump relay - J299-: Repair Manual, 4.2 Liter V8 5V BiTurbo Engine Mechanical, Engine Code(s): BCY, Repair Group 26 Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-87 Actuation of Wastegate bypass regulator valve - N75- - Touch key. Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 4 - Wastegate bypass regulator valve - N75 - Touch key again. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted This valve is actuated (clicks) for approx. 1 minute if key is not touched beforehand to select next control element. If valve is not actuated (does not click): Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-88 Actuation of Valve -2- for camshaft adjustment - N208- - Touch key. Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 5 - Valve -2- for camshaft adjustment - N208- - Touch key again. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted This valve is actuated (clicks) for approx. 1 minute if key is not touched beforehand to select next control element. If valve is not actuated (does not click): Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY - Check camshaft adjustment valve: Repair Manual, 4.2 Liter V8 5V BiTurbo Engine Mechanical, Engine Code(s): BCY, Repair Group 15 Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-89 Diagnosis of Fuel System Leak Detection Pump (LDP) -V144- actuation - Touch key. Indicated on VAS 5051: A - Control element test waiting - Selection of next step required 6 - Leak Detection Pump (LDP) - V144- - Touch key again. Indicated on VAS 5051: A - Control element test in progress - Selection of next step permitted Switching valve in the LDP is actuated (clicks) for approx. 1 minute if key is not touched beforehand to select next control element. If valve is not actuated (does not click): Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY - Check Leak Detection Pump (LDP - V144-: Repair Manual, Fuel Supply System, Repair Group 15 Audi A6 Sedan 1998-2004, Audi A6 Avant 1999-2004, Audi allroad quattro 2001-2004, Audi S6 Avan..., Audi RS6 2003-2004 - 4.2 Liter V8 5V BiTurbo Fuel Injection & Ignition, Engine Code(s): BCY 01-90 Actuation of Recirculating valve for turbocharger - N249- - Touch key.